protected virtual async Task InternalNavigatingFrom(object sender, StyleNavigatingCancelEventArgs e)
		{
			await OnNavigatingFrom(sender, e);
		}
		protected virtual async Task OnNavigatingFrom(object sender, StyleNavigatingCancelEventArgs e)
		{

		}
		public Task NavigatingFrom(object sender, StyleNavigatingCancelEventArgs e)
		{
			return InternalNavigatingFrom(sender, e);
		}